Made of Borosilicate glass, Prisms Erotic Glass offers erotic toys that are not only visually appealing, but sexually stimulating. Unlike most glass toys, Prisms Erotic Glass presents handmade, durable, high-quality items that will withstand your most intense desires. Prisms glass sex toys are compatible with all lubricants, completely hypoallergenic, and can be heated or cooled for temperature play.